A.Canary Current B.Benguela Current C.Agulhas Current D.South Atlantic Current
A.fixed to B.needed for C.pushed to D.drawn to
A.Chart No.1 B.Catalog of Charts C.IMO Practical Navigator D.IMO Light List
A.very rare B.common C.often D.reasonable
A.National Geospatial-Intelligence Agency B.Coast Guard C.Naval Observatory D.National Ocean Service